a-a a-c aaa aac aak aan aao aay ac- aca acc ack acn aco acy aka akc akk akn ako an- ana anc ank ann ano any aoa aoc aok aon aoo ay- aya ayc ayk ayn ayo c-- caa cac cak can cao cay cca ccc cck ccn cco cka ckc cko cky cn- cna cnc cnn cno cny co- coa coc cok con coo coy cya cyc cyk cyn cyo ka- kaa kac kak kan kao kay kca kcc kck kcn kkc kkk kkn kky kn- kna knc knk knn kno koa koc kok kon koo koy kya kyc kyn kyo naa nac nak nan nao nay nca ncc nck ncn nco nka nkc nkk nkn nko nky nna nnc nnk nnn nno no- noa noc nok non noo noy nya nyc nyk nyn nyo nyy oaa oac oak oan oao oc- oca occ ock ocn oco oka okc okk oko on- ona onc onk onn ono ony oo- ooa ooc ook oon ooo oya oyo yaa yac yak yan yao yay yca ycc yco ycy yka ykk ykn yna ynk ynn yny yoc yok yon yoo yoy yyc yyy